Modern deep sea sedimentation in the Makassar strait: insights from high-resolution multibeam bathymetry and backscatter, sub-bottom profiles, and USBL-navigated cores

Controls on the development of valleys, canyons, and unconfined channel–levee complexes on the Pleistocene Slope of East Kalimantan, Indonesia

“…Where penetrated by wells, they are confirmed to be largely mud. Thin sands have been documented in basin-floor sediment waves adjacent to a basin-floor fan in the middle of the Makassar Strait (Decker et al, 2004). Sediment waves are common in water depths of 500e2200 m, and are generally independent of the steepness of the slope (Fig.…”

Modern internal waves and internal tides along oceanic pycnoclines: Challenges and implications for ancient deep-marine baroclinic sands: Discussion

“…Some similar sediment waves were cored on the basin floor and are generally siliciclastic mud with thin very fine sands with ripple laminations (Decker et al, 2004). Although Decker et al (2004) interpret those as deposited by nonchannelized turbidites, we think that there is a significant chance they were deposited by deep tidal currents similar to currents described by Shanmugam (2013). Although they are very interesting geologic features, the sediment waves in the Kutei Basin are mud dominated, as demonstrated by well data, and will not form significant reservoirs.…”

“…Many deep-water Makassar wells penetrated near-surface sediment waves on the slope, and data from these wells show that the sediment waves are mud dominated. Some similar sediment waves were cored on the basin floor and are generally siliciclastic mud with thin very fine sands with ripple laminations (Decker et al, 2004). Although Decker et al (2004) interpret those as deposited by nonchannelized turbidites, we think that there is a significant chance they were deposited by deep tidal currents similar to currents described by Shanmugam (2013).…”

Indonesian Throughflow as a preconditioning mechanism for submarine landslides in the Makassar Strait

“…Seismic mapping at the base of the slope in front of the Mahakam delta shows a large number of deep-water depositional features, including turbidite channels, levees and splays, as well as significant MTDs (Posamentier et al 2000). Sediment waves are a common feature, with Decker et al (2004) attributing those along the Sulawesi Slope Apron to non-channelised hyperpycnal or turbidite flows triggered by storm events.…”